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MCUME/MCUME_teensy/teensyspeccy/CodesED.h

305 wiersze
7.5 KiB
C
Executable File
Czysty Bezpośredni odnośnik Wina Historia

/** Z80: portable Z80 emulator *******************************/
/** **/
/** CodesED.h **/
/** **/
/** This file contains implementation for the ED table of **/
/** Z80 commands. It is included from Z80.c. **/
/** **/
/** Copyright (C) Marat Fayzullin 1994-2007 **/
/** You are not allowed to distribute this software **/
/** commercially. Please, notify me, if you make any **/
/** changes to this file. **/
/*************************************************************/
/** This is a special patch for emulating BIOS calls: ********/
case DB_FE: PatchZ80(R);break;
/*************************************************************/
case ADC_HL_BC: M_ADCW(BC);break;
case ADC_HL_DE: M_ADCW(DE);break;
case ADC_HL_HL: M_ADCW(HL);break;
case ADC_HL_SP: M_ADCW(SP);break;
case SBC_HL_BC: M_SBCW(BC);break;
case SBC_HL_DE: M_SBCW(DE);break;
case SBC_HL_HL: M_SBCW(HL);break;
case SBC_HL_SP: M_SBCW(SP);break;
case LD_xWORDe_HL:
J.B.l=OpZ80(R->PC.W++);
J.B.h=OpZ80(R->PC.W++);
WrZ80(J.W++,R->HL.B.l);
WrZ80(J.W,R->HL.B.h);
break;
case LD_xWORDe_DE:
J.B.l=OpZ80(R->PC.W++);
J.B.h=OpZ80(R->PC.W++);
WrZ80(J.W++,R->DE.B.l);
WrZ80(J.W,R->DE.B.h);
break;
case LD_xWORDe_BC:
J.B.l=OpZ80(R->PC.W++);
J.B.h=OpZ80(R->PC.W++);
WrZ80(J.W++,R->BC.B.l);
WrZ80(J.W,R->BC.B.h);
break;
case LD_xWORDe_SP:
J.B.l=OpZ80(R->PC.W++);
J.B.h=OpZ80(R->PC.W++);
WrZ80(J.W++,R->SP.B.l);
WrZ80(J.W,R->SP.B.h);
break;
case LD_HL_xWORDe:
J.B.l=OpZ80(R->PC.W++);
J.B.h=OpZ80(R->PC.W++);
R->HL.B.l=RdZ80(J.W++);
R->HL.B.h=RdZ80(J.W);
break;
case LD_DE_xWORDe:
J.B.l=OpZ80(R->PC.W++);
J.B.h=OpZ80(R->PC.W++);
R->DE.B.l=RdZ80(J.W++);
R->DE.B.h=RdZ80(J.W);
break;
case LD_BC_xWORDe:
J.B.l=OpZ80(R->PC.W++);
J.B.h=OpZ80(R->PC.W++);
R->BC.B.l=RdZ80(J.W++);
R->BC.B.h=RdZ80(J.W);
break;
case LD_SP_xWORDe:
J.B.l=OpZ80(R->PC.W++);
J.B.h=OpZ80(R->PC.W++);
R->SP.B.l=RdZ80(J.W++);
R->SP.B.h=RdZ80(J.W);
break;
case RRD:
I=RdZ80(R->HL.W);
J.B.l=(I>>4)|(R->AF.B.h<<4);
WrZ80(R->HL.W,J.B.l);
R->AF.B.h=(I&0x0F)|(R->AF.B.h&0xF0);
R->AF.B.l=PZSTable[R->AF.B.h]|(R->AF.B.l&C_FLAG);
break;
case RLD:
I=RdZ80(R->HL.W);
J.B.l=(I<<4)|(R->AF.B.h&0x0F);
WrZ80(R->HL.W,J.B.l);
R->AF.B.h=(I>>4)|(R->AF.B.h&0xF0);
R->AF.B.l=PZSTable[R->AF.B.h]|(R->AF.B.l&C_FLAG);
break;
case LD_A_I:
R->AF.B.h=R->I;
R->AF.B.l=(R->AF.B.l&C_FLAG)|(R->IFF&IFF_2? P_FLAG:0)|ZSTable[R->AF.B.h];
break;
case LD_A_R:
R->R++;
R->AF.B.h=(byte)(R->R-R->ICount);
R->AF.B.l=(R->AF.B.l&C_FLAG)|(R->IFF&IFF_2? P_FLAG:0)|ZSTable[R->AF.B.h];
break;
case LD_I_A: R->I=R->AF.B.h;break;
case LD_R_A: break;
case IM_0: R->IFF&=~(IFF_IM1|IFF_IM2);break;
case IM_1: R->IFF=(R->IFF&~IFF_IM2)|IFF_IM1;break;
case IM_2: R->IFF=(R->IFF&~IFF_IM1)|IFF_IM2;break;
case RETI:
case RETN: if(R->IFF&IFF_2) R->IFF|=IFF_1; else R->IFF&=~IFF_1;
M_RET;break;
case NEG: I=R->AF.B.h;R->AF.B.h=0;M_SUB(I);break;
case IN_B_xC: M_IN(R->BC.B.h);break;
case IN_C_xC: M_IN(R->BC.B.l);break;
case IN_D_xC: M_IN(R->DE.B.h);break;
case IN_E_xC: M_IN(R->DE.B.l);break;
case IN_H_xC: M_IN(R->HL.B.h);break;
case IN_L_xC: M_IN(R->HL.B.l);break;
case IN_A_xC: M_IN(R->AF.B.h);break;
case IN_F_xC: M_IN(J.B.l);break;
case OUT_xC_B: OutZ80(R->BC.W,R->BC.B.h);break;
case OUT_xC_C: OutZ80(R->BC.W,R->BC.B.l);break;
case OUT_xC_D: OutZ80(R->BC.W,R->DE.B.h);break;
case OUT_xC_E: OutZ80(R->BC.W,R->DE.B.l);break;
case OUT_xC_H: OutZ80(R->BC.W,R->HL.B.h);break;
case OUT_xC_L: OutZ80(R->BC.W,R->HL.B.l);break;
case OUT_xC_A: OutZ80(R->BC.W,R->AF.B.h);break;
case INI:
WrZ80(R->HL.W++,InZ80(R->BC.W));
--R->BC.B.h;
R->AF.B.l=N_FLAG|(R->BC.B.h? 0:Z_FLAG);
break;
case INIR:
do
{
WrZ80(R->HL.W++,InZ80(R->BC.W));
--R->BC.B.h;R->ICount-=21;
}
while(R->BC.B.h&&(R->ICount>0));
if(R->BC.B.h) { R->AF.B.l=N_FLAG;R->PC.W-=2; }
else { R->AF.B.l=Z_FLAG|N_FLAG;R->ICount+=5; }
break;
case IND:
WrZ80(R->HL.W--,InZ80(R->BC.W));
--R->BC.B.h;
R->AF.B.l=N_FLAG|(R->BC.B.h? 0:Z_FLAG);
break;
case INDR:
do
{
WrZ80(R->HL.W--,InZ80(R->BC.W));
--R->BC.B.h;R->ICount-=21;
}
while(R->BC.B.h&&(R->ICount>0));
if(R->BC.B.h) { R->AF.B.l=N_FLAG;R->PC.W-=2; }
else { R->AF.B.l=Z_FLAG|N_FLAG;R->ICount+=5; }
break;
case OUTI:
--R->BC.B.h;
I=RdZ80(R->HL.W++);
OutZ80(R->BC.W,I);
R->AF.B.l=N_FLAG|(R->BC.B.h? 0:Z_FLAG)|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0);
break;
case OTIR:
do
{
--R->BC.B.h;
I=RdZ80(R->HL.W++);
OutZ80(R->BC.W,I);
R->ICount-=21;
}
while(R->BC.B.h&&(R->ICount>0));
if(R->BC.B.h)
{
R->AF.B.l=N_FLAG|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0);
R->PC.W-=2;
}
else
{
R->AF.B.l=Z_FLAG|N_FLAG|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0);
R->ICount+=5;
}
break;
case OUTD:
--R->BC.B.h;
I=RdZ80(R->HL.W--);
OutZ80(R->BC.W,I);
R->AF.B.l=N_FLAG|(R->BC.B.h? 0:Z_FLAG)|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0);
break;
case OTDR:
do
{
--R->BC.B.h;
I=RdZ80(R->HL.W--);
OutZ80(R->BC.W,I);
R->ICount-=21;
}
while(R->BC.B.h&&(R->ICount>0));
if(R->BC.B.h)
{
R->AF.B.l=N_FLAG|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0);
R->PC.W-=2;
}
else
{
R->AF.B.l=Z_FLAG|N_FLAG|(R->HL.B.l+I>255? (C_FLAG|H_FLAG):0);
R->ICount+=5;
}
break;
case LDI:
WrZ80(R->DE.W++,RdZ80(R->HL.W++));
--R->BC.W;
R->AF.B.l=(R->AF.B.l&~(N_FLAG|H_FLAG|P_FLAG))|(R->BC.W? P_FLAG:0);
break;
case LDIR:
do
{
WrZ80(R->DE.W++,RdZ80(R->HL.W++));
--R->BC.W;R->ICount-=21;
}
while(R->BC.W&&(R->ICount>0));
R->AF.B.l&=~(N_FLAG|H_FLAG|P_FLAG);
if(R->BC.W) { R->AF.B.l|=N_FLAG;R->PC.W-=2; }
else R->ICount+=5;
break;
case LDD:
WrZ80(R->DE.W--,RdZ80(R->HL.W--));
--R->BC.W;
R->AF.B.l=(R->AF.B.l&~(N_FLAG|H_FLAG|P_FLAG))|(R->BC.W? P_FLAG:0);
break;
case LDDR:
do
{
WrZ80(R->DE.W--,RdZ80(R->HL.W--));
--R->BC.W;R->ICount-=21;
}
while(R->BC.W&&(R->ICount>0));
R->AF.B.l&=~(N_FLAG|H_FLAG|P_FLAG);
if(R->BC.W) { R->AF.B.l|=N_FLAG;R->PC.W-=2; }
else R->ICount+=5;
break;
case CPI:
I=RdZ80(R->HL.W++);
J.B.l=R->AF.B.h-I;
--R->BC.W;
R->AF.B.l =
N_FLAG|(R->AF.B.l&C_FLAG)|ZSTable[J.B.l]|
((R->AF.B.h^I^J.B.l)&H_FLAG)|(R->BC.W? P_FLAG:0);
break;
case CPIR:
do
{
I=RdZ80(R->HL.W++);
J.B.l=R->AF.B.h-I;
--R->BC.W;R->ICount-=21;
}
while(R->BC.W&&J.B.l&&(R->ICount>0));
R->AF.B.l =
N_FLAG|(R->AF.B.l&C_FLAG)|ZSTable[J.B.l]|
((R->AF.B.h^I^J.B.l)&H_FLAG)|(R->BC.W? P_FLAG:0);
if(R->BC.W&&J.B.l) R->PC.W-=2; else R->ICount+=5;
break;
case CPD:
I=RdZ80(R->HL.W--);
J.B.l=R->AF.B.h-I;
--R->BC.W;
R->AF.B.l =
N_FLAG|(R->AF.B.l&C_FLAG)|ZSTable[J.B.l]|
((R->AF.B.h^I^J.B.l)&H_FLAG)|(R->BC.W? P_FLAG:0);
break;
case CPDR:
do
{
I=RdZ80(R->HL.W--);
J.B.l=R->AF.B.h-I;
--R->BC.W;R->ICount-=21;
}
while(R->BC.W&&J.B.l);
R->AF.B.l =
N_FLAG|(R->AF.B.l&C_FLAG)|ZSTable[J.B.l]|
((R->AF.B.h^I^J.B.l)&H_FLAG)|(R->BC.W? P_FLAG:0);
if(R->BC.W&&J.B.l) R->PC.W-=2; else R->ICount+=5;
break;
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